Which of the following are examples of irreversibilities that are often present in actual systems? Select all that apply.?
a) Friction
b) Heat Transfer
c) Elevation Change
d) Mixing of two fluids
e) Boundary work
f) Temperature changes
a) Friction
b) Heat Transfer
c) Elevation Change
d) Mixing of two fluids
e) Boundary work
f) Temperature changes
billrussell42
friction loses are not reversible, as that is lost heat.
heat transfer is reversible with energy applied. Same with elevation change, Temperature change. Eg, a hot rock in a room cools off, but can be reversed by heating the rock.
Mixing of two fluids can sometimes be reversed with special processes and with difficulty. Eg distillation.
Boundary work ... don't know what this means